KR200271728Y1 - Display apparatus - Google Patents

Abstract

The display device according to the present invention has the effect that the cold cathode fluorescent lamp can be easily mounted on the fluorescent lamp mounting panel compared to the prior art because the cold cathode fluorescent lamp is mounted on the fluorescent lamp mounting panel to be mass produced by the ground terminal.

In addition, the display device according to the present invention is because the cold cathode fluorescent lamps are alternately mounted on the fluorescent lamp attachment panel to prevent problems such as shading in the portion where the cold cathode fluorescent lamps are connected in parallel as in the prior art. It works.

In the display device according to the present invention, since the ground terminal into which the cold cathode fluorescent lamp is fitted is made of a transparent material through which predetermined light is transmitted, light generated inside the ground terminal passes through the transparent material and is directed toward both the diffusion plate and the display unit. There is an advantage to be investigated.

Description

Display apparatus

The present invention relates to a display device, and more specifically, a cold cathode fluorescent lamp and a fluorescent lamp having a thin aperture (hereinafter, collectively referred to as a 'cold cathode fluorescent lamp') are alternately mounted to each other at a connection portion of the cold cathode fluorescent lamp. The present invention relates to a display device that prevents shading from occurring. The display device of the present invention includes not only an advertising display device but also a device used in a medical device such as an X-ray film inspector or an ophthalmic measuring device that is formed as an image visible on a display surface as a backlight unit that is a separate light source.

Recently, as a display device, a liquid crystal display (Liquid Crystal Digital) has been widely used in a monitor of a personal computer or a television of a wall-mounted TV. However, unlike LCD (Light Emitting Diode), PDP (Plasma Display Panel) and EL (Electro Luminescence), such a liquid crystal display device does not emit light by itself. It requires a backlight unit (Back Light Unit), which is a separate light source that emits light with uniform brightness as a whole.

In addition, even in the case of an outdoor advertising panel, a flat plate made of a Pannaplex material with an advertisement does not emit light like a liquid crystal display, so that an advertisement attached to the flat plate may be recognized from the outside. As such, it requires a backlight unit, which is a separate light source that irradiates the advertising surface with uniform brightness as a whole.

At this time, the cold cathode fluorescent lamp is mainly used for the backlight unit of such a display device. The cold cathode fluorescent lamp has a very low illuminance such as about 5 mm or less, and has an excellent illuminance, and a lifespan of about 35,000 hours or more, which is much longer than other lighting products. Because.

Hereinafter, a conventional display device and a backlight unit of the display device used therein will be described in detail.

Conventional display devices are largely composed of a display unit in which an image is formed, a backlight unit for irradiating it with a separate light, and a frame for combining the display unit and the backlight unit.

At this time, the conventional backlight unit is largely divided into a side emitting backlight unit and a bottom emitting backlight unit, the side emitting backlight unit is a cold cathode fluorescent lamp is installed on the side, the reflective film is attached to the back of the backlight unit, the front It was composed of a structure in which a diffusion plate, a diffusion film, or the like is attached to the display unit to irradiate predetermined light.

However, the side light-emitting backlight unit of the conventional display device is not only limited to the size of a certain size or less when irradiating light from one side, but also the size is possible only within a maximum of 1.5m when irradiating light from both sides Problems arise. In addition, when the light is irradiated from both sides as described above, there is a problem that the uniformity of illuminance decreases at the end portion thereof, and shade is generated at the portion where the cold cathode fluorescent lamp is connected, so that uniform illuminance required for expensive products is required. Where there is a problem that can not be used. Therefore, despite the fact that the display device using the cold cathode fluorescent lamp has a much higher resolution but is almost semi-permanent, the reason why it is not used for X-ray film inspection and the like is that the shadow is generated on the part where the cold cathode fluorescent lamp is connected to make accurate diagnosis. Since there is a problem that the results are not reliable, because thick fluorescent tubes are used, it is inconvenient to replace the fluorescent lamps frequently because the fluorescent lamps with short lifespans must be used unavoidably. In particular, the side arrangement display device using the conventional cold cathode fluorescent lamp is not widely used at present because the wiring part connecting the cold cathode fluorescent lamp also generates a shade and is difficult to install and manufacture when it is separated to the outside. I can't do it.

Meanwhile, in the backlight unit of the backlight unit of the conventional display device, a reflecting plate is attached to the back of the backlight unit, a diffusion plate or a diffusion film is attached to the front of the backlight unit, and a cold cathode fluorescent lamp is disposed between the reflecting plate and the diffusion plate. It consists of a structure installed side by side in parallel to illuminate the display unit.

However, such a back light backlight unit of the conventional display device has a cold cathode fluorescent lamp is installed side by side in parallel, there is a problem that the shadow appears around the connection ground terminal for grounding the cold cathode fluorescent lamp, and such a back When the light-emitting backlight unit is enlarged, it is possible to enlarge only one side due to the shadow generated from the unit connected to the cold-cathode fluorescent lamp. Therefore, it is difficult to manufacture the super-large backlight unit corresponding to the ultra-large display device which is recently developed. The following problems arise.

On the other hand, such a conventional display device is not only difficult to produce a special frame frame for each structure of the display device, but also very difficult to attach a cold cathode fluorescent lamp, using a long cold cathode fluorescent lamp as long as possible Therefore, there are many damages in handling and inconvenience that cannot be easily manufactured by the general public causes problems that cannot be applied to a large display device.

Therefore, the present invention has been made in view of the above problems, and the object of the present invention is applicable to an ultra-large display device, while the cold cathode fluorescent lamps are alternately mounted with each other so that shading occurs at the connection portion of the cold cathode fluorescent lamp. It is to provide a display device that prevents.

1 is a perspective view showing a display device according to an embodiment of the present invention;

2 is an exploded perspective view showing a display device according to an embodiment of the present invention;

3 is a perspective view illustrating a backlight unit according to an embodiment of the present invention;

Figure 4 is a perspective view showing a cold cathode fluorescent lamp and a ground terminal mounted thereon according to an embodiment of the present invention

5 is a perspective view showing a cold cathode fluorescent lamp of another embodiment of the present invention

FIG. 6 is a sectional view taken along line B-B of the ground terminal shown in FIG.

7 is a perspective view showing that one fluorescent lamp mounting panel according to the present invention is electrically connected to another fluorescent lamp mounting panel

Figure 8a is a perspective view showing a copper wire arranged on the fluorescent lamp mounting panel according to the present invention.

Figure 8b is a perspective view showing another embodiment of the copper wire arranged on the fluorescent lamp mounting panel according to the present invention.

9 is a cross-sectional view taken along the line A-A of the display device shown in FIG.

Figure 10 is an exploded perspective view of a display device according to another embodiment of the present invention. Figure 11 is a partially enlarged front view showing a backlight unit according to yet another embodiment of the present invention.

The display device of the present invention for realizing such an object includes a display unit in which an image is formed, a cold-tone fluorescent lamp for irradiating predetermined light to the display unit to form an image as a visible image, and such a cold cathode fluorescent lamp. The ground holes arranged alternately on the front surface are formed so as to be interleaved with each other, the fluorescent lamp mounting panel for supplying power to the cold cathode fluorescent lamp, and a frame for coupling the display unit and the fluorescent lamp mounting panel to each other; It is done.

Further, both ends of the cold cathode fluorescent lamp is further characterized in that the ground terminal is fitted to the end of the cold cathode fluorescent lamp to allow the cold cathode fluorescent lamp easily detachable to the fluorescent lamp mounting panel.

Further, when the plurality of fluorescent lamp mounting panels are connected to the back of the fluorescent lamp mounting panel, it is characterized in that the connecting terminals are formed on the upper, lower, left, and right ends to facilitate electrical connection between the fluorescent lamp mounting panels.

In addition, the ground terminal is formed of a transparent material, the insertion hole is formed so that the cold cathode fluorescent lamp is fitted on one surface, the fitting projection is formed so that the ground terminal can be fitted into the ground hole formed in the fluorescent lamp mounting panel on one side The insertion hole and the fitting protrusion are characterized by being electrically energized.

Hereinafter, the display apparatus 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings. At this time, the present invention will be described as a preferred embodiment of the present invention a liquid crystal display device.

As shown in FIGS. 1 to 9, the display device 100, which is the first embodiment of the present invention, has a rectangular cylindrical shape as a whole, and has a large display unit 120, a diffusion plate 140, and a backlight unit 160. ) And the frame 180 to combine them.

Specifically, the display unit 120 is installed on the front of the display device 100 of the present invention, and serves to form an image on the LCD screen.

In addition, the diffusion plate 140 is installed directly behind the display unit 120, and when light is irradiated from the backlight unit 160, the diffuser plate 140 transmits part or all of the irradiated light.

On the other hand, the backlight unit 160 is installed on the back of the diffusion plate 140, which is the back of the display device 100, and irradiates light from the back of the display device 100 to the diffusion plate 140 and the display unit 120. It plays a role. At this time, the backlight unit 160 is composed of a cold cathode fluorescent lamp 161, a ground terminal 163 and the fluorescent lamp mounting panel 170 to which they are attached.

More specifically, the cold cathode fluorescent lamp 161 has a circular bar shape, has a predetermined length, and a fluorescent material and mercury, etc., are injected into the inside of the cold cathode fluorescent lamp 161 so as to emit a predetermined light. Electrodes 162 are formed to be connected to the (+) and (-) poles, respectively. In this case, of course, the present invention can be applied to a general fluorescent lamp instead of the cold cathode fluorescent lamp 161. In the cold cathode fluorescent lamp 161, as shown in FIG. 3, the terminals of the cold cathode fluorescent lamp 161 of the upper and lower layers are alternately arranged in the middle, but as shown in FIG. Only a few of the ends of the cold cathode fluorescent lamp 161 may be alternately installed.

In addition, the grounding terminal 163 has a rectangular box shape in which a fitting protrusion 164 of a conductor material protrudes so as to fit into a ground hole (Hole, 172) of a fluorescent lamp mounting panel 170, which will be described later, on one side thereof. An insertion groove 165 having a shape similar to that of the electrode 162 of the cold cathode fluorescent lamp 161 is formed so that one electrode of the electrodes 162 formed at both ends of the cathode fluorescent lamp 161 is fitted. At this time, the surface where the fitting protrusion 164 of the ground terminal 163 protrudes is called the rear surface, and if one surface of the ground terminal 163 opposite to the rear surface is the front surface, the ground terminal 163 is attached to the rear surface with a fluorescent lamp It is fitted to the panel 170, the front surface is in contact with the diffusion plate 120 to support the diffusion plate 120.

Here, the ground terminal 163 is preferably formed of a transparent material so that it can be irradiated in the direction of the light diffusion plate 120 emitted from the insertion groove 165. In addition, a conductive part 167 made of a conductive material is formed in the middle of the inner diameter of the insertion groove 165 to electrically connect with the fitting protrusion 164 inserted into the ground hole 172 of the fluorescent lamp mounting panel 170. It is preferable to be connected in an energized state, and the reflecting material so that the light emitted from the insertion groove 165 can be irradiated toward the diffuser plate 120 in the front and rear portions of the energization portion 167 of the insertion groove 165. 166 is preferably applied. At this time, the ground terminal 169 may be formed integrally with the cold cathode fluorescent lamp 168 as shown in FIG.

On the other hand, the fluorescent lamp panel 170 is a panel shape in which a plurality of materials are stacked, the one surface is a plurality of ground holes 172 so that the cold cathode fluorescent lamp 161 described above is fitted to the ground terminal 163 is mounted. On the other side, a connecting terminal 171 is formed on the other surface so that one fluorescent lamp attaching panel can be easily electrically energized by the other fluorescent lamp attaching panel. At this time, the ground hole 172 is preferably formed in a mutually staggered position so that the cold cathode fluorescent lamps 161 having different lengths are alternately mounted to each other, and the connection terminal 171 is connected to another fluorescent lamp attachment panel. It is preferable that the positive and negative electrodes are formed in the vertical and horizontal directions so that the lamp mounting panel can be easily electrically energized even in any of the up, down, left, and right directions.

Here, the fluorescent lamp panel 170 is a panel shape in which a plurality of materials are laminated, the back support plate 173, copper wire 174, insulating vinyl (Vinyl, 175), connecting plate 176, and reflection Consisting of the film 177, the lamination structure and order thereof will be described sequentially. In this case, the portion where the ground hole 172 is formed in the fluorescent lamp mounting panel 170 is referred to as the front side for convenience, and the portion where the connection terminal 171 is formed will be referred to as the rear side.

First, the support plate 173 is located at the rearmost portion of the fluorescent lamp mounting panel 170, and is formed of a plastic material having a flat plate shape and capable of insulation. Thereafter, the copper wire 174 is attached or installed on the front surface of the support plate 173. At this time, the copper wire 174 is arranged so that the (+) pole and the (-) pole are sequentially arranged, but do not short-circuit with each other as shown in FIG. 8A. And the copper wire 174 may be arranged as shown in Figure 8b.

Thereafter, an insulating vinyl 175 having a predetermined thickness is installed on the front surface of the support plate 173 on which the copper wire 174 is arranged so that the (+) and (-) electrodes are insulated from each other. In addition, a connection plate 176 having a predetermined thickness is installed on the front surface of the insulating vinyl 175, and light emitted from the cold cathode fluorescent lamp 161 is again directed toward the display unit 120 on the front surface of the connection plate 176. The reflective film 177 to be reflected is finally installed.

Here, a plurality of ground holes 172 penetrating the reflective film 177, the connecting plate 176, and the insulating vinyl 175 are formed in the reflective film 177, the connection plate 176, and the insulating vinyl 175. The ground hole 172 serves to expose the copper wire 174 arranged in the support plate 173 to the outside, and the ground terminal 163 and the cold cathode fluorescent lamp 161 are connected to this ground hole ( Power is supplied from the copper wire 174 through 172. In this case, the connection plate 176 is installed between the insulating vinyl 175 and the reflective film 177 to physically hold the ground hole 172 when the ground terminal 163 is fitted into the ground hole 172. Or support. The fluorescent lamp mounting panel 170 configured as described above may be sequentially stacked, or may be integrally formed. In addition, the copper wire 174 in the fluorescent lamp 170 may be manufactured collectively by a printed circuit board formed by being printed on the support plate 173.

Meanwhile, the frame 180 which combines the display unit 120, the diffuser plate 140, and the backlight unit 160 configured as described above has a polygonal bar shape on one surface of the display unit 160 and the diffuser plate 140. And fitting grooves 181 are formed to respectively fit the backlight units 160, and mounting holes 185 are formed at both ends to allow one frame to be coupled to the other frame. At this time, the worker can be coupled to the mounting hole formed in the other frame and the mounting hole formed in the frame 180, such as the connection rod 183 of the circular rod shape. In this case, an inverter (not shown) may be additionally installed in the frame 180 to apply an appropriate power to the cold cathode fluorescent lamp 161.

Hereinafter, the method of coupling the present invention display device 100 configured as described above and its operation and effects will be described in detail.

First, a plurality of fluorescent lamp attachment panels 170 are laminated and bonded by a supporting plate 173, a copper wire 174, an insulating vinyl 175, a connection plate 176 and a reflective film 177, and then display unit The plurality of fluorescent lamp attachment panels 170 are connected to each other to fit the size of 120. At this time, one fluorescent lamp mounting panel is easily electrically connected to the other fluorescent lamp mounting panel connected to the top, bottom, left and right through the connecting terminal 171 formed on the back.

Subsequently, after fixing the ground terminal 163 to both ends of the plurality of cold cathode fluorescent lamps 161 having different mutual sizes, the plurality of cold cathode fluorescent lamps 161 to which the ground terminals 163 are inserted are connected to the fluorescence. It is sequentially inserted in the front surface of the lamp mounting panel 170. At this time, the cold cathode fluorescent lamp 161 inserted into the ground terminal 163 is inserted into the ground hole 172 formed on the front surface of the fluorescent lamp mounting panel 170, respectively, and arranged inside the fluorescent lamp mounting panel 170. The copper wire 174 is in electrical communication with each other.

Subsequently, when the plurality of cold cathode fluorescent lamps 161 having the ground terminal 163 are inserted into and inserted into the fluorescent lamp mounting panel 170, the plurality of cold cathode fluorescent lamps 161 are fitted with the fluorescent lamp mounting panel 170. The backlight unit 160 is inserted into the fitting hole 181 formed at the rearmost side of the frame 180.

Thereafter, the diffusion plate 120 is inserted into the fitting hole 180 formed at the middle of the frame 180, and finally, the display unit 120 is inserted into the fitting hole 181 formed at the front of the frame 180. You will cry.

When the display unit 120, the diffusion plate 140, and the backlight unit 160 are inserted into the frame 180 in this manner, the frame and the other frame adjacent thereto are coupled to each other by using the connection pins 183. Assembly of the display device 100 of the invention is completed.

Subsequently, when a normal inverter is connected to the backlight unit 160 and the display unit 120 to supply power, the display unit 120 forms a predetermined image, and the backlight unit 160 emits a predetermined light. By irradiating the light toward the display unit 120, the image formed on the display unit 120 is formed into a visible image.

As described above, since the cold cathode fluorescent lamp 161 is mounted on the fluorescent lamp mounting panel 170 to be mass-produced by the ground terminal 163, the display device 100 according to the present invention is easier than the conventional cold cathode. The fluorescent lamp 161 may be mounted on the fluorescent lamp attachment panel 171.

In addition, since the cold cathode fluorescent lamp 161 is alternately mounted on the fluorescent lamp mounting panel 170, the display device 100 according to the present invention is connected to the cold cathode fluorescent lamp 161 in parallel. This can prevent problems such as shading.

In the display device 100 according to the present invention, since the ground terminal 163 to which the cold cathode fluorescent lamp 161 is fitted is made of a transparent material through which predetermined light is transmitted, the light generated inside the ground terminal 163 is transparent. Passing through the material there is an advantage that both the diffusion plate 140 and the display unit 120 is irradiated.

The display device according to another embodiment of the present invention relates to a side light emitting backlight unit 200. As shown in FIG. 10, the side light emitting backlight unit 200 has a cold cathode fluorescent lamp 201 installed at a side thereof. The reflective film 202 is attached to the support plate 203, and the diffuser plate 204 is attached to the front surface to irradiate predetermined light onto the display unit. In the present embodiment, the cold cathode fluorescent lamps 201 are preferably formed at staggered positions such that the cold cathode fluorescent lamps 201 are alternately mounted on the semi-cylindrical side mounting panel 205 as shown in FIG. 10. It is configured to be attached. Therefore, on the side mounting panel 205, the adjacent ground hole 206 and the lower ground hole 206 are formed to cross each other in a staggered state to prevent the formation of shadows between adjacent cold cathode fluorescent lamps. Formed.

The side mounting panel 205 includes a display unit 207 and a diffusion plate 204 disposed above the cold cathode fluorescent lamp 201 and a support plate 203 and a reflective film 202 below. .

The side mounting panel 205 is arranged outward from the cold cathode fluorescent lamp 201 in order of a reflective film 207, a connection plate 208, an insulating vinyl 209, a copper wire 210, and a support plate 211. The ground hole 206 is formed in the reflective film 207 to the copper wire 210 to correspond to the number of cold cathode fluorescent lamps 201. Since the components have the same configuration as the components of the first embodiment, detailed description thereof will be omitted herein. The side mounting panel 205 as described above can be manufactured in a batch as a printed circuit board, the copper wire 210 is printed on the support plate 211. In the cold cathode fluorescent lamp 201 used for the side mounting panel 205, the ground terminal 163 described in the first embodiment is connected to the ground hole as described in the first embodiment.

In this embodiment, the support plate 212 of the transparent material is inserted between the diffusion plate 204 and the reflective film 202, but may be integrally formed of a transparent material without being spaced apart.

The support plate 211 is located at the rearmost portion, and is formed of a plastic material having a flat plate shape and capable of insulation.

The display device having the side mounting panel according to the present embodiment having such a configuration can form a precise pixel because the shading is prevented from occurring at the connection portion of the fluorescent lamp by the cold cathode fluorescent lamps alternately connected to each other. It can be used for X-ray film inspector and vision measuring device, so that accurate X-ray photographing can be reproduced, and the inspection ability is greatly improved, and it does not use a short-lived fluorescent lamp. Has an effect.

In the foregoing description, specific embodiments have been described and illustrated in the present invention, but it is obvious that the present invention may be variously modified and implemented by those skilled in the art, and the embodiments thus modified may be modified in the spirit or point of view of the present invention. It should not be understood individually from the above, these modified embodiments should fall within the appended utility model claims of the present invention.

As described above, in the display device according to the present invention, since the cold cathode fluorescent lamp is mounted on the fluorescent lamp mounting panel to be mass produced by the ground terminal, the cold cathode fluorescent lamp can be easily mounted on the fluorescent lamp mounting panel. It can be effective.

In addition, the display device according to the present invention is because the cold cathode fluorescent lamps are alternately mounted on the fluorescent lamp attachment panel to prevent problems such as shading in the portion where the cold cathode fluorescent lamps are connected in parallel as in the prior art. It works.

In the display device according to the present invention, since the ground terminal into which the cold cathode fluorescent lamp is fitted is made of a transparent material through which predetermined light is transmitted, light generated inside the ground terminal passes through the transparent material and is directed toward both the diffusion plate and the display unit. There is an advantage to be investigated.

Claims (14)

A display unit in which an image is formed, A cold cathode fluorescent lamp positioned on a rear surface of the display unit to irradiate predetermined light to the display unit to form the image as a visible image; Located on the back of the display unit, the cold cathode fluorescent lamps are mutually alternately arranged with the ground hole is formed on the front surface so as to cross the mounting, the fluorescent lamp attaching panel for supplying power to the cold cathode fluorescent lamp, And a frame for coupling the display unit and the fluorescent lamp attachment panel to each other. According to claim 1, Both ends of the cold cathode fluorescent lamp is further equipped with a ground terminal is fitted to the end of the cold cathode fluorescent lamp to allow the cold cathode fluorescent lamp easily detachable to the fluorescent lamp mounting panel. Display device. The grounding terminal of claim 2, wherein the grounding terminal is formed of a transparent material, and an insertion hole is formed on one surface of the grounding terminal to insert the cold cathode fluorescent lamp, and the grounding terminal is formed on the grounding hole formed on the fluorescent lamp mounting panel. A fitting protrusion is formed to be fitted, and the insertion hole and the fitting protrusion are electrically energized. According to claim 1 or claim 3, wherein when the plurality of fluorescent lamp mounting panel is connected to the back of the fluorescent lamp mounting panel, connecting terminals are formed at the upper, lower, left and right ends respectively to facilitate electrical connection between the fluorescent lamp mounting panel. Display device characterized in that. The display apparatus of claim 2, wherein the cold cathode fluorescent lamp includes the ground terminal integrated at both ends thereof. The panel of claim 1, wherein the fluorescent lamp attaching panel comprises: an insulating insulating plate, a copper wire arranged on the supporting plate, an insulating vinyl covering the copper wire, a connecting plate provided on the insulating vinyl, and a connecting plate. The reflective film to be installed is sequentially stacked, the display device characterized in that a plurality of the ground hole is formed through the reflective film, the connecting plate and the insulating vinyl so that the copper wire is exposed to the outside. The display apparatus according to claim 6, wherein the fluorescent lamp attachment panel is integrally formed. The display apparatus according to claim 6, wherein the fluorescent lamp attachment panel is a printed circuit board formed by printing the copper wire on the support plate. A display unit in which an image is formed, A cold cathode fluorescent lamp positioned on a side of the display unit to irradiate predetermined light to the display unit to form the image as a visible image; Located on the side of the display unit, the cold hole fluorescent lamps are mutually alternately arranged in the ground hole is arranged in front of each other, the fluorescent lamp side mounting panel for supplying power to the cold cathode fluorescent lamps; And a frame for coupling the display unit and the fluorescent lamp side mounting panel to each other. 10. The apparatus of claim 9, wherein the fluorescent lamp side mounting panel is arranged outwardly from the cold cathode fluorescent lamp in the order of a reflective film, a connecting plate, an insulating vinyl, a copper wire, and a support plate, and the cold cathode from the reflective film to the copper wire. Display device characterized in that the ground hole is formed corresponding to the number of fluorescent lamps The display apparatus according to claim 9, wherein the fluorescent lamp side mounting panel is a printed circuit board formed by printing the copper wire on the support plate. 10. The method of claim 9, wherein both ends of the cold cathode fluorescent lamp is further equipped with a ground terminal is fitted to the end of the cold cathode fluorescent lamp to allow the cold cathode fluorescent lamp easily detachable to the fluorescent lamp mounting panel. Display device. The display apparatus of claim 9, wherein the cold cathode fluorescent lamp includes the ground terminal integrally formed at both ends thereof. The display apparatus of claim 9, wherein the display unit is an eye examination table or an X-ray reading film.